Home / 13,319.69-18,383.51-7,656.17

Finding the Fourth Proportional to 13,319.69, 18,383.51 and 7,656.17

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Solution

The fourth proportional to 13,319.69, 18,383.51 and 7,656.17 is: 10,566.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.69 : 18,383.51 = 7,656.17 : x
  2. Step 2: Convert to fraction form
    13,319.69/18,383.51 = 7,656.17/x
  3. Step 3: Cross multiply
    13,319.69x = 18,383.51 × 7,656.17
  4. Step 4: Simplify right side
    13,319.69x = 140,747,239.48
  5. Step 5: Solve for x
    x = 140,747,239.48/13,319.69
  6. Step 6: Final answer
    x = 10,566.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.